122747261 has 8 divisors (see below), whose sum is σ = 151073664. Its totient is φ = 97118640.

The previous prime is 122747257. The next prime is 122747279. The reversal of 122747261 is 162747221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122747261 - 2² = 122747257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122747231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674345 + ... + 674526.

It is an arithmetic number, because the mean of its divisors is an integer number (18884208).

Almost surely, 2^122747261 is an apocalyptic number.

It is an amenable number.

122747261 is a deficient number, since it is larger than the sum of its proper divisors (28326403).

122747261 is a wasteful number, since it uses less digits than its factorization.

122747261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348891.

The product of its digits is 9408, while the sum is 32.

The square root of 122747261 is about 11079.1362930510. The cubic root of 122747261 is about 496.9781212915.

The spelling of 122747261 in words is "one hundred twenty-two million, seven hundred forty-seven thousand, two hundred sixty-one".